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EP0313173B1 - Elektrodenanordnung und Verfahren zu ihrer Herstellung - Google Patents

Elektrodenanordnung und Verfahren zu ihrer Herstellung Download PDF

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Publication number
EP0313173B1
EP0313173B1 EP88202362A EP88202362A EP0313173B1 EP 0313173 B1 EP0313173 B1 EP 0313173B1 EP 88202362 A EP88202362 A EP 88202362A EP 88202362 A EP88202362 A EP 88202362A EP 0313173 B1 EP0313173 B1 EP 0313173B1
Authority
EP
European Patent Office
Prior art keywords
electrode
conducting wire
assembly
attachment
conducting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88202362A
Other languages
English (en)
French (fr)
Other versions
EP0313173A1 (de
Inventor
Johannes Hendrikus Maria Spekhorst
Arne Sippens Groenewegen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SIPPENS GROENEWEGEN, ARNE
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0313173A1 publication Critical patent/EP0313173A1/de
Application granted granted Critical
Publication of EP0313173B1 publication Critical patent/EP0313173B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/263—Bioelectric electrodes therefor characterised by the electrode materials
    • A61B5/268—Bioelectric electrodes therefor characterised by the electrode materials containing conductive polymers, e.g. PEDOT:PSS polymers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/16—Details of sensor housings or probes; Details of structural supports for sensors
    • A61B2562/17—Comprising radiolucent components

Definitions

  • This invention relates to an assembly comprising an electrode and a conducting wire attached thereto according to the preamble of claim 1 and to a method for producing same.
  • Such an electrode assembly is known from US-A-4 109 648 and may be used for investigation of the heart where the electric current generated by the heart muscle is used, which current may be measured on the body surface.
  • the registration thereof gives an electro-cardiogram (ECG) and may serve for diagnostic or control purposes.
  • ECG electro-cardiogram
  • the positions on the body where the current is measured have been standardized: the chest, arms and legs.
  • a catheter is positioned precisely by means of an intermitting X-ray view of the chest.
  • the cardiologist has the ECG at his disposal in order to judge the status of the heart.
  • the known metal containing electrodes interfere with the X-ray view, such electrodes are not placed on the chest, but only on the arms and on the legs, i.e. outside the X-ray view.
  • the so-called X-ray transparent electrodes may be placed on the chest.
  • the electrode material consists e.g. of thermoplastic polyester reinforced with carbon fibres. This material has a good electric conductivity.
  • the connecting wire consists of carbon fibres and is also electro-conductive and X-ray transparent.
  • US patent specification 4,109,648 discloses an electrode assembly, the electrode comprising a hydrogel including carbon.
  • Said hydrogel consists of a considerable amount of water e.g. 70% by wt., and a polymer forming a hydrophylic gel, e.g. hydroxyethyl methacrylate.
  • the connecting wire may consist of carbon fibres. Said carbon fibres may be embedded in said hydrogel by polymerization of the starting materials of said hydrogel around the free end of the connecting wire which serves for attachment to the electrode.
  • connecting wires and electrodes by means of small clips,small plugs, snap fasteners and conductive glue.
  • the known X-ray transparent electrode assemblies have considerable disadvantages.
  • the electrical properties in particular the impedance
  • the attachment of the connecting wire with the electrode is vulnerable.
  • the aim of this invention is to abolish the abovementioned disadvantages.
  • This invention relates to an assembly comprising an electrode of conducting material and a conducting wire attached thereto, wherein the end of said conducting wire serving for the attachment to said electrode is present in the electrode material, wherein the assembly is X-ray transparant, the electrode consists of thermoplastic conducting material, and the end of the conducting wire being in contact with the electrode has the shape of a fanned-out bundle.
  • the electrode material consists of carbon containing plastic material, e.g. polyester, and the connecting wire consists of carbon fibres.
  • the end of the conducting wire, which serves for attachment to the electrode may be present in the electrode material in an arbitrary way.
  • said fibres may be present as a bundle in said thermoplastic electrode material.
  • acceptable electrical properties are obtained.
  • Optimal electrical properties are obtained, however, if the end of the conducting wire which serves for the attachment, is in contact with said electrode material through a surface area as large as possible.
  • the present invention also relates to a method for producing an assembly comprising an electrode of conducting thermoplastic material and a conducting wire attached thereto, said method being characterized in that the end of the conducting wire, which serves for the attachment, is introduced in the plasticized electrode material. Then said wire may be put into the molten electrode, e.g. pressed into the heated surface layer of the electrode.
  • it will be preferred to inject electrode material into a mold containing the end of said conducting wire.
  • the end of said conducting wire before the introduction into or the application of the electrode material in such a form, that a surface as large as possible of the end of the wire is in contact with said electrode material.
  • the invention also relates to an electrode assembly obtainable according to the method as described above.
  • Figure 1 shows a view of an electrode assembly according to the invention.
  • a disc-like, carbon containing plastic body 1 which may have a diameter of some millimeters up to some centimeters, contains the end of a conducting wire 2 in the shape of a fanned out bundle.
  • the conducting wire 2 is provided with an electrical insulation 3 and the electrode body 1 is present in a housing 4 made of plastic.
  • the edge of the housing 4 forms a cavity with the body 1.
  • a conducting paste is put into this cavity. In this way a more stable signal is obtained when the patient moves. All of the used materials are X-ray transparent.
  • Figure 2 also shows a view of an electrode assembly according to the invention; the reference numbers have the above indicated meaning. The difference from the embodiment according to figure 1 is that the end of the conducting wire has not been fanned out.
  • Figure 3 shows a cross sectional view along the line III-III of the embodiment according to figure 2.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electrotherapy Devices (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Ceramic Capacitors (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Claims (5)

  1. Baugruppe mit einer Elektrode (1) aus leitendem Material und einem daran befestigten leitenden Draht (2), wobei das der Befestigung an der Elektrode (1) dienende Ende des leitenden Drahtes (2) im Elektrodenmaterial vorliegt, dadurch gekennzeichnet, daß die Baugruppe Röntgenstrahlen durchläßt, die Elektrode (1) aus einem thermoplastischen leitenden Material besteht und daß das mit der Elektrode (1) in Kontakt stehende Ende des leitenden Drahtes (2) die Form eines aufgefächerten Bündels aufweist.
  2. Baugruppe nach Anspruch 1, dadurch gekennzeichnet, daß das Elektrodenmaterial aus Kohlenstoff enthaltendes Kunststoffmaterial besteht und der leitende Draht (2) aus Kohlefasern besteht.
  3. Baugruppe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das der Befestigung an der Elektrode (1) dienende Ende des leitenden Drahtes (2) mit dem Elektrodenmaterial über eine größtmögliche Fläche in Kontakt steht.
  4. Verfahren zur Herstellung einer Baugruppe nach Ansprüchen 1 bis 3 und dadurch gekennzeichnet, daß das Ende des leitenden Drahtes (2), das der Befestigung an der Elektrode (1) dient, in das plastifizierte Elektrodenmaterial eingeführt wird.
  5. Verfahren zur Herstellung einer Baugruppe, wie in Ansprüchen 1 bis 3 definiert, dadurch gekennzeichnet, daß das Elektrodenmaterial in eine das Ende des leitenden Drahtes (2) enthaltende Form eingespritzt wird.
EP88202362A 1987-10-23 1988-10-21 Elektrodenanordnung und Verfahren zu ihrer Herstellung Expired - Lifetime EP0313173B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8702534 1987-10-23
NL8702534A NL8702534A (nl) 1987-10-23 1987-10-23 Elektrodesamenstel alsmede werkwijze voor het vervaardigen daarvan.

Publications (2)

Publication Number Publication Date
EP0313173A1 EP0313173A1 (de) 1989-04-26
EP0313173B1 true EP0313173B1 (de) 1997-07-16

Family

ID=19850811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202362A Expired - Lifetime EP0313173B1 (de) 1987-10-23 1988-10-21 Elektrodenanordnung und Verfahren zu ihrer Herstellung

Country Status (4)

Country Link
EP (1) EP0313173B1 (de)
AT (1) ATE155332T1 (de)
DE (1) DE3855964D1 (de)
NL (1) NL8702534A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2669754A1 (fr) * 1990-11-23 1992-05-29 Odam Moniteur de surveillance des parametres physiologiques vitaux d'un patient en cours d'examen dit irm.
US5782761A (en) * 1996-01-24 1998-07-21 Graphic Controls Corporation Molded electrode
AT507855A1 (de) 2009-01-20 2010-08-15 Lang Leonh Bioelektrode

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1466919A1 (de) * 1965-05-14 1969-07-17 Peter Schmidt EKG-Elektrode
DK122258B (da) * 1969-09-01 1972-02-14 Philips Ind Handel As Elektrode til elektromedicinsk brug.
GB1542859A (en) * 1975-12-18 1979-03-28 Nat Res Dev Electrode assemblies
US4102331A (en) * 1976-09-21 1978-07-25 Datascope Corporation Device for transmitting electrical energy
JPS58209519A (ja) * 1982-05-31 1983-12-06 Toray Ind Inc 任意の形状の物質を埋めこんだキヤスト法含水ゲル
WO1987005814A1 (en) * 1986-04-03 1987-10-08 Walter Schmid Medical electrode

Also Published As

Publication number Publication date
NL8702534A (nl) 1989-05-16
DE3855964D1 (de) 1997-08-21
EP0313173A1 (de) 1989-04-26
ATE155332T1 (de) 1997-08-15

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